I could connive you could connive he could connive we could connive you could connive they could connive
V-ing form
I could be conniving you could be conniving he could be conniving we could be conniving you could be conniving they could be conniving
Perfect
I could have connived you could have connived he could have connived we could have connived you could have connived they could have connived
V-ing perfect
I could have been conniving you could have been conniving he could have been conniving we could have been conniving you could have been conniving they could have been conniving
Negation
Simple form
I couldn't connive you couldn't connive he couldn't connive we couldn't connive you couldn't connive they couldn't connive
V-ing form
I couldn't be conniving you couldn't be conniving he couldn't be conniving we couldn't be conniving you couldn't be conniving they couldn't be conniving
Perfect
I couldn't have connived you couldn't have connived he couldn't have connived we couldn't have connived you couldn't have connived they couldn't have connived
V-ing perfect
I couldn't have been conniving you couldn't have been conniving he couldn't have been conniving we couldn't have been conniving you couldn't have been conniving they couldn't have been conniving
Interrogative form
Simple form
could I connive? could you connive? could he connive? could we connive? could you connive? could they connive?
V-ing form
could I be conniving? could you be conniving? could he be conniving? could we be conniving? could you be conniving? could they be conniving?
Perfect
could I have connived? could you have connived? could he have connived? could we have connived? could you have connived? could they have connived?
V-ing perfect
could I have been conniving? could you have been conniving? could he have been conniving? could we have been conniving? could you have been conniving? could they have been conniving?
Interro-negative form
Simple form
couldn't I connive? couldn't you connive? couldn't he connive? couldn't we connive? couldn't you connive? couldn't they connive?
V-ing form
couldn't I be conniving? couldn't you be conniving? couldn't he be conniving? couldn't we be conniving? couldn't you be conniving? couldn't they be conniving?
Perfect
couldn't I have connived? couldn't you have connived? couldn't he have connived? couldn't we have connived? couldn't you have connived? couldn't they have connived?
V-ing perfect
couldn't I have been conniving? couldn't you have been conniving? couldn't he have been conniving? couldn't we have been conniving? couldn't you have been conniving? couldn't they have been conniving?